feat: add devenv to make developing easier

flake.lock

@@ -659,6 +659,22 @@
         "type": "github"
       }
     },
+    "nixpkgs-unstable": {
+      "locked": {
+        "lastModified": 1773646010,
+        "narHash": "sha256-iYrs97hS7p5u4lQzuNWzuALGIOdkPXvjz7bviiBjUu8=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "5b2c2d84341b2afb5647081c1386a80d7a8d8605",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nixpkgs_2": {
       "locked": {
         "lastModified": 1752480373,
@@ -851,6 +867,7 @@
         "nix-openclaw": "nix-openclaw",
         "nixcord": "nixcord",
         "nixpkgs": "nixpkgs_6",
+        "nixpkgs-unstable": "nixpkgs-unstable",
         "noctalia": "noctalia",
         "sops-nix": "sops-nix",
         "spicetify-nix": "spicetify-nix",

flake.nix

@@ -3,6 +3,7 @@
 
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixos-25.11";
+    nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";
 
     flake-parts.url = "github:hercules-ci/flake-parts";
     flake-parts.inputs.nixpkgs-lib.follows = "nixpkgs";

modules/base/devenv.nix

@@ -0,0 +1,13 @@
+{
+  inputs,
+  config,
+  ...
+}: {
+  flake.modules.nixos.base = {pkgs, ...}: let
+    system = pkgs.stdenv.buildPlatform.system;
+    devenv = (import inputs.nixpkgs-unstable {system = system;}).devenv;
+  in {
+    environment.systemPackages = [devenv];
+    nix.settings.trusted-users = ["root" config.flake.meta.user.name];
+  };
+}